An NMR study of ionic motion in ammonium ferrocyanide
β Scribed by M.S. Whittingham; P.S. Connell; R.A. Huggins
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 548 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0022-4596
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π SIMILAR VOLUMES
The temperature dependence of the proton spin-lattice relaxation times T1 and Tip for polycrystalline (NH~)~RuCI~, (NHa)zPdCle and (NHd)zPtClb, shows that the ammonium reorientation is the dominant relaxation mechanism. In these salts, as for other low-barrier ammonium salts, the activation energie
Proton Zcoman-and dipolar spin-lattice rekxation times and second moments have been measured in polycrystallinc SiH4 at 24 %IHz, between 90 and 3 K. Down to 25 K the classical model for molecular motion appibs; below 25 EC, quantum effects have to be taken into account.